So I just installed CC and migrated my old Lightroom Classic Catalog over, but it seems CC is downloading files it's already uploaded. Here's some more detail -

Migrated Classic Catalog to CC

Deleted Classic Catalog (actually moved it and its files to an external drive as a backup)

Created a new Lightroom Classic Catalog and told it to Sync with my CC account (There are a few things I want to be able to do in Classic, and my folder structure was terrible before so I wanted to get that cleaned up by downloading